Converting url to TinyURL in C#

Category .NET | Publication Date : 12/19/2009

The first function parse a string parameter to find urls and convert them into TinyURL with the second function:

public static string ToTinyURLs(string txt)
{
    Regex regx = new Regex("http://([\\w+?\\.\\w+])+([a-zA-Z0-9\\~\\!\\@\\#\\$\\%\\^\\&amp;\\*\\(\\)_\\-\\=\\+\\\\\\/\\?\\.\\:\\;\\'\\,]*)?", RegexOptions.IgnoreCase);
    MatchCollection mactches = regx.Matches(txt);
    foreach (Match match in mactches)
        txt = txt.Replace(match.Value, GetTinyUrl(match.Value));
    return txt;
}

The second function call TinyURL service and return the response:

public static string GetTinyUrl(string Url)
{
    try
    {
        if (Url.Length <= 12)
            return Url;
        if (!Url.ToLower().StartsWith("http") && !Url.ToLower().StartsWith("ftp"))
            Url = "http://" + Url;
        WebResponse webResponse = WebRequest.Create("http://tinyurl.com/api-create.php?url=" + Url).GetResponse();
        using (StreamReader reader = new StreamReader(webResponse.GetResponseStream()))
            return reader.ReadToEnd();
    }
    catch
    {
        return Url;
    }
}